Machine for shoemaking



Feb. 29, 1944. 1.. SABO 2,343,028

MACHINE FOR SHOEMAKING Filed NOV. 18, 1941 19 3 21 H ll 1 1 14 18 '44 ZZQ. 1? 1 76 60 6.;

J2 1 as .34

INVENTOR:

ATTORNEY 3 Sheets-Sheet l-V Feb.29, 1944. SAB'O 2,343,028

MACHINE FOR SHOEMAKING Filed Nov. 18, 1941, 3 Sheets-Sheet 3 INVENTOR: Lou. Scwo ATTORNEY Patented Feb. 29, 1944 MACHINE FOR SHOEMAKING Louis Sabo, Astoria, N. Y., assignor to Herman B.

Delman, New York, N. Y.

Application November 18, 1941, Serial No. 419,522

11 Claims.

My invention relates to the art of shoemaking.

The object of my invention is to provide a construction by means of which a flap is formed from a part of the outsole of a shoe to fit accurately over the breast of a heel and conform thereto, said forming operation being accomplished after the heel has been permanently at tached to the shoe.

A further object is to provide means for positioning the shoe and holding it firmly prior to and during the forming of the flap.

A further object is to provide a pintle which is inserted in the last on which the shoe is placed, the pintle being adjustable by means of elements which provide a universal joint, with means for holding the jointed parts firmly together in their adjusted position.

Another object is to provide a die or cutter which forms the flap, with a yielding material which is carried thereby and extends to the cutting edges thereof, the yielding material serving to hold the fiap in a flat condition during the forming operation and to release the flap from the die or cutter thereafter, thus preventing the flap from lifting when the die or cutter is rising from the platen which supports the flap.

Another object is to provide a machine in which the stroke of the element carrying the cutter is very short, thus permitting the use of a small cam to actuate it.

Another object is to provide definitely adjustable means for guiding and positioning the shoe, flap and heel in the machine, depending on whether a right or left shoe is to be operated upon.

A further object is to provide a resilient seat to receive the back of the shoe counter, which will yield under pressure and permit the opening in the last to be quickly positioned to slip onto the pintle, and removed therefrom without undue friction between the shoe and support. I

Further objects and advantages of the invention will be in part set forth in the following specification, and in part will be obvious therefrom without being specifically pointed out.

With the above and other objects of the invention in view, the invention consists in the novel construction, arrangement and combination of various devices, elements and parts, as set forth in the claims hereof, one embodiment of the same being illustrated in the accompanying drawings and described in this specification.

Referring to the drawings which form a part of the specification:

Fig. 1 is a front elevational view of a machine embodying my invention, a part being shown in vertical section;

Fig. 2 is a perspective view of a part of the cutter and yielding material carried thereby;

Fig. 3 is a side elevational view ofthe machine, a part being shown in vertical section, and a shoe supported by a pintle which extends into the last, the shoe flap resting on a platen in position for the forming operation;

Fig. 4 is a longitudinal sectional view showing the last mounted on the pintle, and the joint elements by means of which'the pintle is positioned;

Fig. 5 is an inverted plan View of the slide which carries the shoe, and the yielding cradle on which the heel portion of the shoe rests;

Fig. 6 is an end view of the cradle; and

Fig. 7 is a front view, showing, partly in section, the universal joint mechanism shown in Fig. 4.

Referring first to Figs. 1 and 3, It) indicates the frame of the press, which may be similar in form and construction to that shown and described in my co-pendingapplication Ser. No. 358,442. H indicates a base plate, on which are mounted pillars l2, l2,and l3 indicates a horizontal plate fixed to depending tubular guides l4, l4, slidable on said pillars. This plate [3 is supported by springs l5, l5, surrounding the pillars i2, i2, and on which the guides l4, l4, rest. A cutter l6 (see also Fig. 2) is fixed to a plate i1, and is removably secured in a recess l8 in the under surface of the plate l3, being held in position by the coaction of the outwardly diverging sides of the plate ll and recess l8, and being secured against horizontal removal by screws IS]. The heads of the screws l9 are cut away at one side, and when rotated to a position opposite to that illustrated, permit the plate to be withdrawn.

The cutter I6 is operated by a plunger 20, slidable in the frame I!) and acting upon the plate I3, and which is actuated by a cam 2| and a pitman 22, the cam being mounted on a shaft 23, rotated by any suitable means, not shown. 22' indicates the cap piece of the pitman 22.

Extending upward from the base II, are side walls 25, 25, and a rear end wall 26. Upon these walls is removably mounted a plate 27, in the top of which is mounted the platen surface proper upon which the flap rests during the cutting operation, designated 28. The plate 2'! and walls 25 are slidably engaged by interfitting ridges and grooves, as indicated in the drawings, screws '29 I holding the plate against forward movement and permitting removal thereof when desired. The platen proper, 28, is of suitable material, such as a relatively soft metal, to coact with the cutter it, without unduly blunting the same or requiring excessively fine adjustment of the stroke thereof. If preferred, the platen might be yieldably mounted. The platen surface may be removably mounted in the plate 21 if desired, by any suitable means, to permit replacement when necessary.

The distance between the platen 28 and the uppermost position of the cutter i5, is made relatively short, allowing ample space for the insertion of the flap upon the platen, and at the same time requiring only a short stroke of the plunger 29 and permitting the use of a small cam 21, and

increasing the speed of operation by the short' travel required.

In Figs. 3 and 4, 38 indicates a shoe, placed upon a last 3i, and positioned by the shoe-supporting means shown more in detail in Figs. 4 to '7 and now to be described.

32, indicate recesses in the walls (see Fig. l), in which slide side arms 34 forming part of a carriage or shoe-supporting slide, the rear ends of said arms extending thru an opening in,

element 48 is bifurcated at its inner or rear end,

forming arms 4| and 42 which are secured to the under side of the sliding member 37 (see Figs. 4 and 5). The lever 39 is pivoted centrally on the under side of the front spacing bar its outer end is provided with a handle (not shown, the end being broken away) for manual swinging operation, and the inner end is rounded substantially as shown and lies between the arms 4| and 42, thereby translating the swinging movement of the lever into a straight transverse movement of the shoe-supporting means.

To the upwardly extending front portion 4i) of the L-shaped member 40, is secured a resilient wire ii-3, formed approximately U-shaped, its rear end being open and its forward end being upwardly bent and secured by a screw M. A cradle 45 is slidably supported on the wire 43, which passes thru and closely fits into perforations 4"! in legs or projections 4t.

Also supported on the front portion E5) are the supporting and adjusting means for the pintle 56. A plate 55 is laterally swingingly connected to the portion 49' by a screw 56, the inner end of which is flared and engages the plate 55, and the outer portion of which lies in an internally screw-threaded sleeve 57, having an enlarged head 58. By turning the head 58 in one direction, the frictional engagement between portion 40' and the plate 55 is loosened and the pintle may a rounded by an internally screw-threaded sleeve 54, having an enlarged head 54. Rotation of the sleeve 54 in one direction upon the screw 53, binds the short sleeve 52 tightly between the sleeves 55' and 5 3, holding it in any position to which it may be adjusted, whereas opposite rotation of the sleeve loosens such frictional engagement and consequently permits the pintle to be moved swingingly to such angle relative to the horizontal as may be desired, and the parts then again tightened to retain such adjustment.

By this means, the angle of the pintle to the horizontal and its lateral position relative to the central line of the cradle, may be controlled, to fit the pintle into the hole of the last 3|, and also to control the position of the last upon the cradle. The resiliency of the wire 43 supporting the cradle 45, holds the shoe closely against the pintle, allowing for variations in the distance between the holes in various lasts which may be used and the heel portion thereof, and nevertheless when inserting or removing the shoe yields sufilciently to avoid damage to the shoe from friction.

Referring again to Figs. 1, 2 and 3, it will be seen that the cutter I6 is provided with a pad Bil, of sponge rubber or other suitable material. This pad substantially fills the interior cavity of the cutter, extending close to the cutting edges and its lower surface lying substantially flush with the line of said cutting edges. The shoe being positioned on the carriage and the latter being slid into position for the forming operation, the heel 6! lies under the platen-plate 2i and the blank flap 62 lies on the platen. On the downward stroke of the plunger 20, the pad or cushion 6E! smooths the flap 62, insuring that the cutting edges will form the correct contour intended, without distortion due to any bulging, wrinkling or other displacement of the flap upon the platen. Upon the rising of the cutter, the resiliency of the pad til holds the flap against the platen until the cutting edge is clear of the leather, thus obviating any rising of the flap with the cutter and 7 consequent necessity of manually disengaging it therefrom.

It will be understood that, depending upon whether a right or a left shoe is being worked upon, the lever 39 is moved to right or left as the case may be and the shoe adjusted by the means above described. When it is desired to operate upon corresponding left or right shoes, the lever 33 is shifted, bringing the supporting elements into the correct adjusted position.

When it is desired to operate upon a different size or shape of shoes, new adjustments of the pintle are made, and if the flap is to be cut for a different type or height of heel, a different cutter is inserted.

The adjustments having been once correctly made by a skilled operator, the cutting operation may be carried on by an unskilled person, who can also make the necessary change from right to left by swinging the handle of the lever 39. The parts may be adjusted in such manner that the swinging of the lever alone is sufficient, or, if preferred, the adjustment of the pintle may also be changed as desired.

At the right of the platen-plate 2'1, are shown indicating means, designated 55, which may be similar in construction and operation to the indicating means disclosed in my copending appli cation above referred to, or of any suitable type. and which serve to accurately show the distance to which the slideshould be moved into the ma-. chine on each operation. j

A finger 66 upon the cam 2|, upon each rotation of the cam, strikes against an arm 61, which in turn operates a slidefill, controlling a blower by which a jet of air is delivered to the platen 28 after each cutting operation, for removing the trim remaining from the forming operation. A pin 69 riding in a slot 10 in plate 10' guides the slide 68, and an arm H, links 12 and 13, and a valve 14, control the flow of compressed air from the pipe T5 to the blower 16.

The rising and falling of the arm ii! also opcrates a counting mechanism 11, connected, with the arm 61 by a finger 18, links '89 and Bil, and pivotal connection of the latter at 8| to the shaft of the counter, which may be of any suitable type and indicates the number of shoes operated upon by the cutter.

The operation of the invention having been referred to in the above description of the construction, will be understood by those skilled in the art, without further detailed recapitulation. Many of the steps of said operation are the same as or similar to the operation of the machine disclosed in my copending application above mentioned, and need not here by repeated.

The advantages of the invention will also be understood from what has been above said with regard to the objects, construction and operation a of the invention.

I do not limit myself to the particular details which have been described in this specification and shown in the accompanying drawings, as it is obvious that the same may be modified in various ways, within the scope of the claims hereof, without departing from the spirit and scope of my invention.

Having thus describedmy invention, I claim:

1. In a machine for forming heel flaps for shoes,

comprising means for supporting a shoe having a heel attached in final position thereon, means for forming a fiap of the sole of said shoe to conform to the breast of said attached heel, and means for adjusting the position of said shoe relative to said flap forming means, that improvement which resides in said supporting and adjusting means comprising a carriage slidably mounted for reciprocating movement toward and away from said flap-forming means, a cradle resiliently supported on said sliding carriage in which the heel portion of the shoe rests endwise, and means comprising a pintle mounted in an approximately horizontal position for engaging a last, and means for adjusting said intle to position and hold a shoe thereon in adjusted relation to said cradle.

2. In a machine for forming heel fiaps for shoes, comprising means for supporting a shoe having a heel attached in final position thereon, means for forming a fiap of the sole of said shoe to conform to the breast of said attached heel, and means for adjusting the position of said shoe relative to said fiap forming means, that improvement which resides in said supporting and adjusting means comprising a carriage slidably mounted for reciprocating movement toward and away from said fiap forming means, means for freely supporting the heel portion of a shoe upon said carriage, a pintle for engaging a last in said shoe, said pintle being movably mounted upon said carriage for lateral and angular adjustment with relation thereto, and means for holding said pintle in adjusted relation and thereby positioning said shoe upon said support.

3. In a machine for forming heel flaps for shoes, comprising means for supporting in an approximately vertical position a shoe having a heel attached in, final position thereon, means for forming a fiap of the sole of said shoe to, conform to the breast of said attached heel, and means for adjusting the position of said shoe relative to said'flap-forming means; that improvement which resides in said supporting and adjusting means comprising a carriage slidably mounted for reciprocating movement toward and away from said flap-forming means, a pintle adapted to engage a last in said shoe, means supporting said pintle on said carriage, means for adjusting said pintle laterally with relation to said support, and means for adjusting said pintle angularly with relation to a horizontal line, said means for lateral and angular adjustment holding said pintle firmly in adjusted relation and thereby positioning-said shoe.

4. The construction defined in claim 3, together with means for supporting the heel portion of said shoe and resiliently urging the last therein into close engagement with said pintle.

5. The construction defined in claim 3, together with heel-portion-suppor-ting means for said shoe, and means for shifting said heel-portion supporting means and said pintle-supporting means as a unit laterally of said carriage to permit operation upon a right or a left shoe.

6. In a machine for forming heel flaps for shoes, comprising means for supporting a shoe having a heel attached in final position thereon, means for forming a flap of the sole of said shoe to conform to the breast of said attached heel, and means for adjusting and positioning said shoe relative .to said flap-forming means: that immovement which comprises a supporting seat of substantially cylindrical-segment form in which the heel portion of said shoe rests endwise, adjustable means for supporting and positioning a forward portion of said shoe relative to said seat, and resilient means supporting said heel-portion seat in operative relation with said adjustable supporting means.

'7. The construction defined in claim 6, together with said heel-portion seat being slidably adjustably supported in a tilted horizontal position with relation to said carriage.

8. A machine for forming heel flaps for shoes, comprising in combination: a supporting frame; means for supporting and adjusting in an approximately vertical position a shoe having its heel attached in final position thereon; means for forming a flap of the sole of said shoe to conform to the breast of said attached heel; means carried by one member of said flap-forming means for smoothing said flap prior to said forming operation and disengaging said fiap from said forming member thereafter, and means for actuating said flap forming means; said supporting and adjusting means comprising a carriage mounted for movement to and away from a predetermined position relative to said flap-forming means, means carried thereby for supporting the heelportion of a shoe, a pintle adjustably mounted with relation to said heel-portion support for engaging a last in said shoe, and means resiliently urging said heel portion support toward said pintle to yieldingly engage the heel portions of said shoe and last therebetween; and means for removing the trim remaining after said forming operation.

9. The construction defined in claim 8, together with means for shifting said heel-portion support and pi'ntle as a unit transversely of said carriage, for operation upon a right or a left shoe.

10. The construction defined in claim 8, together with adjustable indicating means fdr exactly indicating the correct position of said shoe 5 for said forming operation.

11. The construction defined in claim 8, together with means indicating the number of 0pera'tions of said flap-forming means; said actu- LOUIS SABO. 

